CN207941881U

CN207941881U - A kind of pipe-expanding device for heat exchanger

Info

Publication number: CN207941881U
Application number: CN201721455175.7U
Authority: CN
Inventors: 陈少丽
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-07-01
Filing date: 2017-11-04
Publication date: 2018-10-09
Anticipated expiration: 2027-11-04

Abstract

The utility model discloses a kind of pipe-expanding device for heat exchanger, the heat exchanger includes heat exchanger tube and the fin on the heat exchanger tube；Pipe-expanding device includes tube expansion component, is matched with the heat exchanger tube, and tube expansion operation is carried out to exchange heat pipe for fluid to be injected into heat exchanger tube；Pressurized part, for carrying out blower operations to the fluid in injection heat exchanger tube；Pressure relief parts, the fluid for being discharged in heat exchanger tube after the completion of tube expansion carry out unloading press operation to exchange heat pipe.The utility model exchanges heat pipe by the fluid through being overpressurized and carries out tube expansion operation, and not only process velocity is fast, and work efficiency is high, can meet large-scale production and processing, is suitable for the tube expansion operation of heat exchanger tube pipe with small pipe diameter；Meanwhile by the way of fluid expanded joint, the structures such as the internal thread of heat transfer tube wall, interior double wedge will not be made to cause to damage, high-quality, the raising efficiency of heat exchanger for the pipe internal surface that exchanges heat.

Description

A kind of pipe-expanding device for heat exchanger

Technical field

The utility model belongs to pipe expanding equipment technical field, more particularly, to a kind of pipe-expanding device for heat exchanger.

Background technology

With the rise of the prices of raw materials such as copper valence, and requirement of the country to air-conditioning efficiency, existing heat-exchange pipe for air conditioner It has begun to develop towards the direction for reducing caliber.

But existing tube expansion mode is to be connected an expanding rod using mechanical expanding by a spherical swollen head, led to It crosses expanding rod to disclose swollen head to heat exchanger tube so that plastic deformation occurs for heat exchanger tube, expands outward, to closely connect with fin Together.

But to reduce the caliber of heat exchanger tube, then the diameter of expanding rod must also reduce so that its strength reduction is carrying out Tube expansion often fractures when operating, to which under the limitation based on processing technology, heat exchanger tube is still difficult to using the idea of pipe with small pipe diameter It realizes.

Utility model content

The utility model for overcome the deficiencies in the prior art, provide it is a kind of using fluid pressurization tube expansion operation for changing The pipe-expanding device of hot device.

To achieve the goals above, the utility model uses following technical scheme：A kind of pipe-expanding device for heat exchanger, The heat exchanger includes heat exchanger tube and the fin on the heat exchanger tube；Pipe-expanding device includes tube expansion component, with the heat exchange Pipe matches, and tube expansion operation is carried out to exchange heat pipe for fluid to be injected into heat exchanger tube；Pressurized part, for changing injection Fluid in heat pipe carries out blower operations；Pressure relief parts, the fluid for being discharged after the completion of tube expansion in heat exchanger tube is with heat exchanging Pipe carries out unloading press operation.It after the utility model is by pressurizeing to fluid, injects in heat exchanger tube so that heat exchanger tube occurs plasticity and becomes Shape, for comparing traditional mechanical expanding mode, the case where fractureing there is no expanding rod；And process velocity is fast, work efficiency is high, Large-scale production and processing can be met；Meanwhile by the way of fluid expanded joint, internal thread, the convex of heat transfer tube wall will not be made The structures such as tooth cause to damage, high-quality, the raising efficiency of heat exchanger for the pipe internal surface that exchanges heat；Also, the interior spiral shell of heat transfer tube wall The height of line, interior double wedge etc. can also be arranged compared to traditional structure bigger so that medium forms turbulent flow or disorderly in heat exchanger tube Stream, in the state of turbulent flow or turbulent flow, heat transfer coefficient higher, heat transfer property is more preferable.

Further, the tube expansion component includes pressurised pipeline and the expanded tube joint that is connected with the pressurised pipeline, described swollen Pipe fitting can realize sealing cooperation with the heat exchanger tube；By the sealing cooperation between expanded tube joint and heat exchanger tube, heat exchange is realized Pipe is in closed state in tube expansion, ensures to be in high pressure conditions in heat exchanger tube always, the plastic deformation that heat exchanger tube generates is big, swollen Pipe effect is good.

Further, further include a locker room, the locker room is connected with a reflux；By reflux to fluid It is effectively recycled, reduces the wasting of resources, realize energy conservation and environmental protection.

Further, the reflux is the reflux line being connected with the locker room；Fluid leads to after the completion of tube expansion It crosses reflux line to be directly back in locker room, back-flow velocity is fast, easy to operate, has the advantages of simple structure and easy realization.

Or it is further, the pressure relief parts are set on the reflux line；When switch member is opened, fluid can be from changing Outflow in heat pipe, and by the locker rooms reflux line Liu Hui, the pressure recovery in heat exchanger tube realizes release to normal value.

Preferably, it is additionally provided with an exhaust part on the reflux line；It, can be in reflux when fluid is gas-liquid mixture phase Exhaust part is opened in the process to exclude gas, only liquid is recycled, and prevents storage intraventricular pressure excessive by force.

Further, the reflux line is connected with the pressurised pipeline, and the pressurised pipeline is equipped with an open-close on-off； The output and input of fluid are realized by same pipeline and locker room's cooperation, it is more easy that pipeline is laid, and locker room is only arranged one A outlet facilitates construction.

Further, the pressure relief parts are a relief valve.

In conclusion the utility model has the following advantages：Heat pipe is exchanged by pressurized fluid and carries out tube expansion operation, not only Process velocity is fast, and work efficiency is high, can meet large-scale production and processing, is suitable for the tube expansion operation of heat exchanger tube pipe with small pipe diameter；Together When, by the way of fluid expanded joint, the structures such as the internal thread of heat transfer tube wall, interior double wedge will not be made to cause to damage, in heat exchanger tube High-quality, the raising efficiency of heat exchanger on surface.

Description of the drawings

Fig. 1 is the structural schematic diagram of the first embodiment of the utility model.

Fig. 2 is the structural schematic diagram of second of embodiment of the utility model.

Fig. 3 is the structural schematic diagram of the third embodiment of the utility model.

Specific implementation mode

In order to make those skilled in the art be better understood from the utility model, below in conjunction with the utility model reality The attached drawing in example is applied, clear, complete description is carried out to the technical scheme in the embodiment of the utility model.

As shown in Figs. 1-3, a kind of pipe-expanding device for heat exchanger, the heat exchanger tube for heat exchanging device 10 carry out tube expansion behaviour Make, the heat exchanger includes multiple heat exchanger tubes and the fin that is respectively arranged on heat exchanger tube, length of these fins along the heat exchanger tube Spend the evenly spaced distribution in direction；Heat exchanger tube is connected between each other forms coherent pipeline, pipeline both ends be respectively input end and Outlet end；Pipe-expanding device includes tube expansion component 2, is matched with the heat exchanger tube, for fluid to be injected into heat exchanger tube with right Heat exchanger tube carries out tube expansion operation；Pressurized part 1, for carrying out blower operations to the fluid in injection heat exchanger tube；Pressure relief parts 3, Fluid for being discharged in heat exchanger tube after the completion of tube expansion carries out unloading press operation to exchange heat pipe；Above-mentioned fluid refer to gas, The liquid gas liquid mixture that either gas and liquid are mixed to form；Specifically, as shown in Figs. 1-2, the tube expansion component 2 includes Pressurised pipeline 21 and expanded tube joint, the expanded tube joint are connected to 21 end of the pressurised pipeline, and the pressurised pipeline 21 can be Rubber hose or metallic conduit；The expanded tube joint is the nozzle made of metal or plastics, is inserted into heat exchanger tube It in input end, and realizes and is interference fitted with heat exchanger tube, so that sealing cooperation between the two；Fluid is defeated by pressurised pipeline It can be filled with to heat exchanger tube by expanded tube joint after sending.

Further, a locker room 4 can be also set, fluid is stored, be liquid or gas-liquid especially suitable for fluid The case where mixture；The pressurized part 1 is connected with the locker room 4, is deposited specifically, can be connected directly between for pressurized part 1 In storage chamber 4 or pressurised pipeline 21 is connected with locker room 4, and pressurized part 1 is arranged in locker room 4, thus and locker room 4 are connected；Preferably, being connected with a reflux 5 in the locker room 4, which is reflux line 51, reflux One end of pipeline 51 can be connected in heat exchanger tube, and the other end is connected with locker room 4, so as to be recycled to fluid, realize Energy conservation and environmental protection；The pressure relief parts 3 are set on the reflux line 51, and the pressure relief parts 3 can be relief valve, or common Valve, when fluid be liquid or gas liquid mixture when, open valve i.e. may make fluid to be discharged from heat exchanger tube；In other realities It applies in example, as shown, 51 other end of the reflux line may be alternatively provided as being connected with the pressurised pipeline 21, fluid is through overcharging Pressure pipeline 21 is back in locker room 4, to only realize the output and input of fluid, pipe by same pipeline and locker room's cooperation It is more easy that road is laid, and one outlet is only arranged in locker room, facilitates construction.

In other embodiment, it can be not provided with reflux, the pressure relief parts 3 are set as a relief valve, directly set It sets on pressurised pipeline 21 or expanded tube joint, the pressurized part 1 is the air compressor directly bought on the market, and fluid is gas Body；When exchanging heat pipe progress tube expansion operation, the outlet end of heat exchanger tube is blocked, and expanded tube joint is inserted into input end, it Start pressurized part afterwards the air after pressurization is filled with to heat exchanger tube so that heat exchanger tube occurs plastic deformation and expands；Tube expansion After the completion, relief valve is opened to release the high pressure gas in heat exchanger tube.

Preferably, the pressurised pipeline 21 is equipped with an open-close on-off, which is the valve bought on the market, Pressurised pipeline 21 can be closed in fluid reflux, ensure that fluid is all back in locker room.

Further, as shown, when fluid is gas liquid mixture, an exhaust can be set on the reflux line 51 Part 6, the exhaust part 6 are the air bleeding valve bought on the market, and exhaust part can be opened during reflux and arranges the gas in fluid Go out, only liquid is recycled, high pressure gas is prevented to be injected into locker room, storage intraventricular pressure will not be caused excessive by force, Yu Qi In his embodiment, it can be also not provided with exhaust part 6, can voluntarily be selected according to fluid situations.

Obviously, described embodiment is only a part of the embodiment of the utility model, instead of all the embodiments. It is obtained by those of ordinary skill in the art without making creative efforts based on the embodiments of the present invention Every other embodiment should all belong to the range of the utility model protection.

Claims

1. a kind of pipe-expanding device for heat exchanger, the heat exchanger includes heat exchanger tube and the fin on the heat exchanger tube； It is characterized in that：Pipe-expanding device includes

Tube expansion component (2), matches with the heat exchanger tube, and tube expansion is carried out to exchange heat pipe for fluid to be injected into heat exchanger tube Operation；

Pressurized part (1), for carrying out blower operations to the fluid in injection heat exchanger tube；

Pressure relief parts (3), the fluid for being discharged in heat exchanger tube after the completion of tube expansion carry out unloading press operation to exchange heat pipe.

2. the pipe-expanding device according to claim 1 for heat exchanger, it is characterised in that：The tube expansion component (2) includes Pressurised pipeline (21) and the expanded tube joint being connected with the pressurised pipeline (21), the expanded tube joint can be realized close with the heat exchanger tube Envelope cooperation.

3. the pipe-expanding device according to claim 2 for heat exchanger, it is characterised in that：Further include a locker room (4), institute It states locker room (4) and is connected with a reflux (5).

4. the pipe-expanding device according to claim 3 for heat exchanger, it is characterised in that：The reflux (5) be with The connected reflux line (51) of the locker room (4).

5. the pipe-expanding device according to claim 4 for heat exchanger, it is characterised in that：The pressure relief parts (3) are set to On the reflux line (51).

6. the pipe-expanding device according to claim 4 or 5 for heat exchanger, it is characterised in that：The reflux line (51) On be additionally provided with an exhaust part (6).

7. the pipe-expanding device according to claim 4 for heat exchanger, it is characterised in that：The reflux line (51) and institute It states pressurised pipeline (21) to be connected, the pressurised pipeline (21) is equipped with an open-close on-off.

8. the pipe-expanding device according to claim 1 for heat exchanger, it is characterised in that：The pressure relief parts (3) are one Relief valve.